<template>
  <view class="cart-box" v-if="cart.length!==0">
    <!-- 收货地址组件 -->
    <my-address></my-address>
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 循环渲染购物车选中的商品 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <!-- 滑动删除 -->
        <uni-swipe-action-item :right-options="options" @click='swipeActionClickHandler(goods)'>
          <my-goods :goods="goods" :showRadio="true" @radio-change="radioChangeHandler" :showNum="true" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!-- 结算区域 -->
    <my-settle></my-settle>
  </view>
 <!-- 空白购物车区域 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
import badgeMix from "@/mixins/tabbar-badge.js"
import {mapState,mapMutations } from 'vuex'
  export default {
  mixins:[badgeMix],
  computed:{
    ...mapState('m_cart',['cart']),
  },
    data() {
      return {
      options: [{
           text: '删除', // 显示的文本内容
           style: {
             backgroundColor: '#C00000' // 按钮的背景颜色
           }
         }]
      };
    },
   methods:{
       ...mapMutations('m_cart', ['updateGoodsState','UpdateGoodsCount','removeGoodsById']),
       // 修改选择框得选中状态
     radioChangeHandler(e){
       this.updateGoodsState(e)
     },
     numberChangeHandler(e){
       this.UpdateGoodsCount(e)
     },
     // 滑动删除
     swipeActionClickHandler(goods){
     this.removeGoodsById(goods.goods_id)
     }
   }
  }
</script>

<style lang="scss">
  .cart-box{
    padding-bottom:50px ;
  }
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
